Shopsmith Forums

Posted: **Thu Jan 20, 2022 1:19 pm**

JPG wrote: ↑Thu Jan 20, 2022 12:39 pm Ya it is the ratio that matters!

So what size would be required? i.e. what size is the original motor poly-v pulley?

Wait until a certain SS engineer gets wind of this conversation!

IIRC the motor pulley is 80 mm.

- David

Posted: **Thu Jan 20, 2022 1:49 pm**

DLB wrote: ↑Thu Jan 20, 2022 12:28 pm I'm unsure of your pulley math.(?) I think a pulley change for 100 RPM would only allow 4000 RPM at the top. That would be better for me in my shop, though. I imagine from Shopsmith's perspective it no longer adds Router/Shaper functions and is less marketable.

- David

It's a good idea to be unsure of any math I do. Yeah, it's a ratio thing that will change the top end more, these are belts and pulleys not gears.
ETA: Not even sure what I meant about gears, time to stop digging.

Posted: **Thu Jan 20, 2022 4:28 pm**

With gears the teeth count!

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